Two women are in the ad, one who is seeking a boyfriend. Her friend is sat next to her on a laptop using a dating site for her. Several men are suggested, but each is turned down for various reasons... until the woman declares that she "only want[s] the best". At which point her friend shouts "bingo!" as she has found 'the best'.. a 6'5" Fireman, vegetarian. With the emphasis coming on the last point, showing out of all these qualities, the friend thinks being a vegetarian is the best. He too is shot down, but only because she thinks it will not work.
VOILA... Not only is he the best candidate, but out of the three reasons, the more important is he's vegetarian. TOUCHDOWN HERBIVORES!!!!!!!!!!!!!
Although the effeminate nature of my username may suggest otherwise, my gender actually falls into the male category.